Ryosuke Yokoyama

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Tsuruoka-shi, Yamagata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for kneading powder, and kneaded material
- Patent number 5,360,622
- Issue date Nov 1, 1994
- Ryosuke Yokoyama
- B28 - WORKING CEMENT, CLAY, OR STONE